Q$6.$ The thermal conductivity, thermal diffusivity and convective heat transfer coefficient are to be determined of a cylindrical rod $,$which is dipped in a hot water at $94C.$ The rod is $12\mathrm{.}5$ cm long and $2\mathrm{.}2$ cm in diameter $.$ The temperatures of the rod were measured by the thermocouple at the surface and at the centre and were $59C$ and $88C$ respectively after $2$ minutes. The density of the rod is $980k\frac{g}{m^3}.$The specific heat of the rod were known to be $3900\frac{J}{k}gC.$ The ambient temperature is $20C.$